Question

Why photodiode is used in reverse biasing explain?

Answer 1

Answer:

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Explanation:

Photodiodes convert incident light to electric current more effectively in reverse bias condition than in forward bias because the width of depletion region increases as you increase the applied reverse bias voltage across the diode (directly proportional) in a reversed biased pin junction.

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Answer 2

Answer:

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Explanation:

As fractional change in minority charge carriers is more than the fractional change in majority charge carriers, the variation in reverse saturation current is more prominent.